Progress in modified electrospun PVC membranes: Toward sustainable solutions for environmental remediation DOI

Fatima Youness,

Sara Akhtiyar,

Ali Reza Tehrani‐Bagha

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 359, P. 130456 - 130456

Published: Nov. 10, 2024

Language: Английский

PVC/CNT Electrospun Composites: Morphology and Thermal and Impedance Behavior DOI Open Access
Marcio Briesemeister, John Alexander Gómez-Sánchez, Pedro Bertemes-Filho

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(20), P. 2867 - 2867

Published: Oct. 10, 2024

Due to their mechanical robustness and chemical resistance, composite electrospun membranes based on polyvinyl chloride (PVC) are suitable for sensor applications. Aiming improve the electrical characteristics of these membranes, this work investigated effects addition carbon nanotubes (CNTs) PVC in terms morphology thermal impedance behavior. Transmission electron microscopy images evidenced that most were encapsulated within fibers oriented along them, while field-emission scanning micrographs revealed consisted uniform with an average diameter 339 ± 31 nm, regardless nanotubes. With respect neat resin, caused a significant lowering glass transition temperature (up 20 °C) marked change second degradation step PVC. Nyquist plots from spectra showed charge transfer resistance (RCT) 38 40 MΩ PVC/CNT 3 wt.% respectively, indicating that, dry state, encapsulation CNTs high porosity prevented formation percolation network, increasing resistance. In wet however, there was greater behavior, decreasing RCT 4.5 1.1 MΩ, respectively. The results study, showing variation behavior between relevant development various types sensors composites.

Language: Английский

Citations

4
A superwetting rough structured nanofibrous membrane with enhancing anti-fouling performance for oil–water separation DOI
Weiyan Zhu, Ning Tang,

Changwen Jia

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 130800 - 130800

Published: Nov. 1, 2024

Language: Английский

Citations

4
High‐Efficiency PLA Nano‐Microfibrous Filters Enabled by Bimodal Structure and Corona Discharge DOI
Ali Toptaş

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: May 10, 2025

ABSTRACT Air pollution is a pressing issue for environmental sustainability and human health, with air filters playing pivotal role in mitigating its effects. However, conventional polymer‐based pose challenges. This study focuses on developing biodegradable poly(lactic acid) fibrous unimodal bimodal filter webs using electro‐blowing (EB) solution‐blowing (SB) techniques. Fiber diameters were controlled by adjusting solution concentrations (10% 20% w/w) applying an electric field during production. EB low‐concentration solutions produced nanofibers (Y) averaging 0.14 μm, while SB high‐concentration yielded fibers (X) around 1.60 μm. Bimodal exhibited dual‐peak distribution centered at 0.17 1.56 Filtration tests 95 L/min flow rate PM 0.3 particles revealed that the sample had highest filtration efficiency (96.562%) airflow resistance (177 Pa). Among configurations, X + Y, nano/microfibers collected simultaneously, demonstrated best quality factor (98.604% 146 Pa Δ P ). Corona discharge treatment further enhanced efficiency, Y achieving 99.997% efficiency. After week of repetitive testing, maintained high performance 99.972% 192 . These findings highlight PLA filters' potential as sustainable efficient solutions.

Language: Английский

Citations

0
A superhydrophobic and heat-resistant PAN/PSU/PTFE composite nanofiber membrane for high-efficiency PM1.0 and PM2.5 filtration DOI Creative Commons
Rizky Aflaha,

Chlara Naren Maharani,

Linda Ardita Putri

et al.

Materials Advances, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This study developed a PAN/PSU/PTFE nanofiber membrane using electrospinning, demonstrating high filtration efficiency for PM 1.0 and 2.5 with thermal stability up to 300 °C consistent performance 4 months.

Language: Английский

Citations

1
PVC/CNT Electrospun Composites: Morphology, Thermal and Impedance Spectra DOI Open Access
Marcio Briesemeister, John Alexander Gómez-Sánchez, Pedro Bertemes-Filho

et al.

Published: July 24, 2024

PVC/CNT membranes were electrospun, and subsequently characterized by thermal analyses (TGA DSC), transmission scanning electron microscopies (TEM FEG) electrical impedance spectroscopy (EIS). TEM images show that most of the nanotubes encapsulated, inside fibers oriented along them. FEG showed no significant differences in average diameters. The CNTs caused a reduction (up to 20 °C) glass transition temperature (Tg) relation resin positive impact on stability. Nyquist plots is possible observe charge transfer resistance 38 40 Mohm, respectively, for pure PVC 3%. It suggested high porosity encapsulation prevents formation percolation network. present study aims evaluate effect morphology, spectra electrospun composites.

Language: Английский

Citations

1
Progress in modified electrospun PVC membranes: Toward sustainable solutions for environmental remediation DOI

Fatima Youness,

Sara Akhtiyar,

Ali Reza Tehrani‐Bagha

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 359, P. 130456 - 130456

Published: Nov. 10, 2024

Language: Английский

Citations

1